高疏水氟化SiO2/聚醚砜复合膜的制备与表征

《复合材料学报》优先在线发表论文。

摘  要：以正硅酸乙酯(TEOS)和全氟癸基三乙氧基硅烷(PFDTES)为混合硅源，以聚醚砜(PES)为基膜材料，通过真空过滤和热处理工艺制备单侧高疏水氟化SiO2/PES(fSiO2/PES)复合膜。通过ATR-FTIR、XPS、TEM和FE-SEM等对单侧高疏水的fSiO2/PES复合膜进行表征，考察PFDTES修饰量和热处理条件对膜疏水性能的影响，并评价fSiO2/PES复合膜的疏水稳定性能。结果表明，当PFDTES:TEOS的质量比为3时，高疏水fSiO2/PES复合膜的疏水性能较好（接触角为131.5°）；当热处理温度为100℃，热处理时间为4 h时，高疏水fSiO2/PES复合膜表面的接触角为138.9°，且其对不同pH值的溶液都有良好的疏水性能。

关键词：聚醚砜；SiO2；复合膜；单侧；高疏水； 

Abstract: A single-side highhydrophobic fluorinated silica/poly(ether sulfone) (fSiO2/PES) composite membrane was prepared by vacuum-filtrating with tetraethoxysilian (TEOS) and perfluorodecyltriethoxysilane (PFDTES) as the silica source. The chemical component and morphology of the single-side highhydrophobic fSiO2/PES composite membrane was examined by ATR-FTIR, XPS, TEM and FE-SEM, individually. The effects of PFDTES modification amount and the heat treatment condition on membrane hydrophobicity were investigated, and the hydrophobic stability of fSiO2/PES composite membrane was evaluated. The results show that the water contact angle of the single-side highhydrophobic fSiO2/PES composite membrane is 131.5°when the mass ratio of PFDTES:TEOS is 3. The water contact angle of the single-side highhydrophobic fSiO2/PES composite membrane is 138.9°, as the heat treatment temperature is 100℃ and the heat treatment time is 4h. In addition, the single-side highhydrophobic fSiO2/PES composite membrane exhibits excellent hydrophobic stable performance.

Keywords: poly(ether sulfone) ; SiO2; composite membrane; single-side; highhydrophobic

作者：李颖娜等，唐山学院 环境与化学工程系，唐山

通讯作者：李颖娜，唐山学院 环境与化学工程系，唐山

全文详见中国知网学术期刊优先数字出版。